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snow_lady [41]
2 years ago
8

Who built the first microscope which allowed people to see things no one has ever seen before such as bacteria sperm in red bloo

d cells
Biology
1 answer:
jeka942 years ago
3 0

Zacharias Janssen was credited with inventing the microscope, however some say Hans Lippershey was the actual inventor as he patented the telescope, which has some similar properties.

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Pls help ill give anything
VARVARA [1.3K]

Answer:

Biotic, Abiotic

Explanation:

Question 4) <u>biotic</u> means living things and those all marked are living animals or plants

Question 5) <u>abiotic</u> these refer to non living things

4 0
2 years ago
While walking in the forest, your friend observed a small animal crawling on a tree. The animal had a rigid body with three body
Neporo4naja [7]

Answer:

The most likely preferable option will be - A.

A. Insects.

Explanation:

The basic features of insects -

  1. Insects have an exoskeleton outside of their body or a shell-like covering on the outside of its body.
  2. Insects have a body with three segments: head, thorax, and abdomen.
  3. Insects have two large eyes and a pair of antennae on top of their heads.
  4. Insects have six legs (3 pairs).
  5. Insects have two pairs of wings on the dorsal part of their body.

 

7 0
3 years ago
What common feature is shared by the sodium and chloride ions?
Fudgin [204]
Their valency is one and both belong to the third period
4 0
3 years ago
Calculate the frequency of b cells specific for antigen a on day 36 if the antibody concentration on day 36 is about 8 × 103. (f
matrenka [14]
-The number of B cells producing the antibody is proportional to the concentration of that antibody.

-On day 16, one out of  100000 B cells are specific for antigen A
\frac{1}{100000} = 1 x 10⁻⁵ B cells

- on day 16, Antibody concentration is  2 × 10¹= 20 Antibodies
- on day 36, antibody concentration 8 × 10³.= 8000

20 antibodies ------------ 1 x 10⁻⁵ B cells
8000 antibodies--------------x

x= (8000 x 1 x 10⁻⁵)/ 20
x= 4x10⁻³ or 1 in 250 are <span>B cells specific for antigen A</span>
8 0
3 years ago
What is the entire group of accounts maintained by a company called?
sergeinik [125]

Answer:

it is called a ledgar

Explanation:

Dont really know how to explain but hopefully it's right

4 0
3 years ago
Read 2 more answers
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