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Sedaia [141]
3 years ago
6

Why is a race car traveling at a constant speed on a circular track an example of an object that is accelerating?

Biology
1 answer:
Natali5045456 [20]3 years ago
8 0
C. Because its direction is always changing. It is accelerating because its velocity vector is changing direction
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A point in development when organisms are particularly susceptible to certain kinds of stimuli in their environments, but the ab
kaheart [24]

The correct answer is B. Sensitive period

Explanation:

In development, the sensitive period refers to a lapse of time in which organisms are more susceptible or receptive to stimuli and therefore during this time there can be great advances in development. Additionally, different from critical periods sensitive periods do not imply irreversible consequence if the stimuli are not presented. For example, in human beings from birth to the age of 6 years, children are more receptive to learn and acquire certain skills such as learning a new language if exposed to it and therefore this can be considered as a sensitive period. Considering this, it can be concluded the definition presented refers to the Sensitive period.

7 0
3 years ago
The fossils of a new species of reptile are found in deposits dating to the Permian period. Later, scients discover that fossils
allochka39001 [22]

Answer:

The correct answer is option c. "adaptive radiation".

Explanation:

The term "adaptive radiation" is used in evolutionary biology to describe a evolutionary history at which many different organisms are created as a result of a rapid diversification of an ancestral species. This phenomenon takes place as a result of changes in the environmental conditions that forces new species to adapt quickly. The scientist observations of many intermediate forms at different continents of an ancestral reptile, most strongly support the evolutionary model of adaptive radiation.

4 0
3 years ago
Sex chromosomes are:
LenaWriter [7]

Answer:

D. the 23rd pair of chromosomes

Explanation:

Humans have a total of 23 pairs of chromosomes. Out of a total of 23 pairs, 22 pairs are autosomes. Autosomes are the chromosomes that carry the genes for all the genetic traits but are not involved in the sex determination of the individuals.

The 23rd pair of chromosomes in humans is of sex chromosomes as these chromosomes carry the genes to regulate the gender of the individuals. A human female has two copies of the X chromosome as sex chromosomes while human males have one X and one Y chromosome as their sex chromosomes. The Y chromosome carries "SRY" gene that codes for testes determining factor and regulates the development of testes in the embryo.

6 0
2 years ago
A mutation that results in a single amino acid substitution in Ras abolishes its ability to hydrolyze GTP, even when GTPase-acti
Drupady [299]

Answer:

The new drug will not be effective against the treatment of cancer.

Explanation:

The drug will not be effective against the cancer treatment because the drug will inhibit the dimerization of receptor tyrosine kinase (RTK) but as the Ras has undergone mutation due to replacement of one amino acid, it will be constitutively expressed and the drug is not effective in stopping the Ras functioning.

Thus, Gefitinib cannot work against the cancerous cell as it is not potent to stop the functioning of mutant Ras protein.

7 0
3 years ago
What event happens first in the development of new organisms?
Rom4ik [11]
Well a<span> sperm fertilizes an egg to form a zygote.</span>
7 0
3 years ago
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