1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
9966 [12]
3 years ago
11

Eggs have species specific receptors on their outer surfaces to which sperm must attach if fertilization is to occur

Biology
1 answer:
mafiozo [28]3 years ago
6 0
The  question is; would a drug that binds irreversibly to these receptors be an effective contraceptive in mammals?, the answer is;Yes; because if the receptors are blocked the sperms will not be able to penetrate the zonal pellucida of the egg.  Contraceptives prevents pregnancy by interfering with the normal process of ovulation, fertilization, and implantation.
You might be interested in
True or false... according to the plum pudding model, electrons are distributed randomly throughout the positively charged “pudd
nexus9112 [7]
This question is true
7 0
3 years ago
Read 2 more answers
Mutations in DNA include deletions and insertions. These types of mutations:
pantera1 [17]

Answer:

(A). Result in different amino acids to be read due to frame shifts

Explanation:

Insertion or deletion mutations (or Indel mutations) can be defined as mutations in DNA due to insertion (addition) or deletion of nucleotide bases in DNA.  

These mutations lead to change in reading frames (sequence of codons), which leads to formation of protein having completely different amino acid sequence. Hence, these mutations are also cause frameshift mutations.

This is due due to triplet nature of genetic codes as insertion or deletion of one or more bases (but not three) would change change in codon sequence and mutated sequence can form a non-functional or truncated protein.

Thus, the correct answer is option (A).

6 0
2 years ago
Pick only ONE sentence Which sentence from the section shows why the right temperature is important for plants? (A) Temperature
Arisa [49]

Answer:

The correct answer is - (B) As with any living thing, a plant has an optimal temperature range at which it grows and performs best.

Explanation:

Like any other or most of the living organism, plants also required an optimal temperature range as they also required appropriate temperature for their growth and development and perform their functions at their best.

Optimum temperature range is a temperature range at which something performs its best similarly plants perform their cellular functions like photosynthesis, metabolism, reproduction, and many other functions that require a particular temperature range.

8 0
3 years ago
SUNLIGHT
Mazyrski [523]

Answer:

"without light energy from the sun, photosynthesis would still occur" is completely false. Light energy is needed for the light-dependent reactions, or simply the light reactions, of photosynthesis.

"oxygen is an input into photosynthesis, carbon dioxide is an output" is also completely false. It is the opposite.

These statements are true, however:

SUNLIGHT

CARBON DIOXIDE

WATER

MINERALS

OXYGEN

PLANT SUGARS

Carbon dioxide enters the leaves through stomata (tiny holes) in the leaves.

Sunlight is an input, CO2 is an input, water is an input (taken in through the roots, transported through the veins), minerals are a collective input, oxygen is an output (produced during photolysis), and plant sugars are an output (glucose, for an example).

5 0
3 years ago
Read 2 more answers
What type of nerve receptors are found in the fingers? Explain​
o-na [289]

Sensory nerve endings in the fingers include Meisnner's corpuscles, Pacinian corpuscles, free nerve endings, Merkel discs, and Ruffini endings.

6 0
2 years ago
Other questions:
  • Small swollen areas in the neck, groin, and axillary region are associated with
    13·1 answer
  • What is lithosphere​
    12·2 answers
  • Which nucleotide component contains nitrogen?
    10·1 answer
  • Snow is a form of _________________.
    10·2 answers
  • If a parent smokes cigarettes and develops lung cancer, is this trait passed on to the offspring?
    10·2 answers
  • Would you expect to find leaf eating beetles and bark eating beetles in the same communities
    14·1 answer
  • Can carbon atoms joined together to form chains or rings
    5·1 answer
  • Arrange the following steps from a typical genetic modification procedure into their correct sequence.
    11·1 answer
  • Spirilla, a type of bacteria, are<br> mitochondria<br> organelles<br> eukaryotes<br> prokaryotes
    6·2 answers
  • A scientist studying natural selection would consider all of the following except
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!